Live Steam player count comparison, updated every 10 minutes. Both are Action / Indie games.
SCP: Secret Laboratory is currently the more played game: 4,363 concurrent players on Steam right now vs 1,984 for ULTRAKILL — about 2.2× more players. ULTRAKILL counters with better Steam reviews: 97% positive vs 91%. SCP: Secret Laboratory is free to play, while ULTRAKILL costs $29.99. Across all tracked metrics, SCP: Secret Laboratory leads 5 of 8.
Coilr tracks charts like this for every game — and playtime history for your own library.
Tracked by Coilr since May 2026 · Steam polled every 10 minutes · methodology
| Metric | SCP: Secret Laboratory | ULTRAKILL |
|---|---|---|
| Players right now | 4,363 | 1,984 |
| 24-hour peak | 7,302 | 4,016 |
| 7-day average | 4,431 | 2,860 |
| 30-day average | 4,399 | 2,871 |
| 30-day trend | — | — |
| Peak (tracked) | 7,302 | 4,016 |
| Steam reviews | 91% positive | 97% positive |
| Recent reviews (3 mo) | 89% positive | 97% positive |
| Total reviews | 232,159 | 237,278 |
| Owners (SteamSpy est.) | ~5,000,000 | ~5,000,000 |
| Release date | Dec 29, 2017 | Sep 3, 2020 |
| Price | Free to play | $29.99 |
Full stats: SCP: Secret Laboratory · ULTRAKILL · add more games to this comparison →
| Month | SCP: Secret Laboratory | ULTRAKILL | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| May 2026 | 3,899 | 3,899 | — | — |
| Jun 2026 | 2,162 | 3,137 | 3,660 | 3,768 |
| Jul 2026 (so far) | 4,294 | 7,302 | 2,942 | 4,016 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
SCP: Secret Laboratory currently has more players: 4,363 concurrent players on Steam vs 1,984 for ULTRAKILL — about 2.2× more players.
Over the last 30 days SCP: Secret Laboratory averaged 4,399 concurrent players and ULTRAKILL averaged 2,871. By that measure SCP: Secret Laboratory is currently the bigger game.
By Steam review score, ULTRAKILL rates higher: 97% positive across 237,278 reviews vs 91% across 232,159 for SCP: Secret Laboratory. SCP: Secret Laboratory has the larger player base right now (4,363 vs 1,984 concurrent). Player counts, ratings, price and trend are compared side by side above.